Are special specifications available?

Yes, special specifications are available upon request.

What is the thickness tolerance?

The thickness tolerance is +/- 0.2mm.

What are the available surface treatments?

We provide Anti-rust Oiled, Black Anneal, and Hot Rolled surface finishes.

Premium Black Annealed Steel Hollow Sections for Structural Use

Name: Premium Black Annealed Steel Hollow Sections for Structural Use
Brand: Qingdao Wanrunda Imp and Exp Co., Ltd.
SKU: 699154692

Shandong, ChinaQingdao Wanrunda Imp and Exp Co., Ltd.

US$480.00

20 Tons

Product profile

Customization

Available

Type

Welded

Technique

Hot Rolled

Model NO.

SHS:10X10-600X600mm;RHS:10X20-400X600mm;CHS:10-720

Material

Carbon Steel

Surface Treatment

Black

Usage

Construction & Decoration

Section Shape

Square

Dimension(Mm)

10X10-600X600;10X20-400X600;10-720

Steel Grade

Q235/Q345/16mn/ASTM A500/Ss400/A53/A36

Wall Thickness(Mm)

1.5-20mm

Length

Normal 6 Meters, Accept Fixed Lenght

W.T Tolerance(Mm)

+/- 0.2mm

Surface

Hot Rolled/Black Anneal/Anti Rust Oil

Transport Package

Anti-Rust Oiled;Be Packed in Bundle by Steel Strip

Specification

SHS:20X20-600X600mm,RHS:20X30-400X600mm,CHS:19-720

Trademark

Wanrunda

Origin

Qingdao and Tianjin

HS Code

7306610000

Production Capacity

10000mt Per Month

Key features

Wide Dimension Range: SHS 20x20-600x600mm, RHS 20x30-400x600mm, CHS OD19-720mm available.

Multiple Steel Grades: Includes Q195, Q235, Q345, ASTM A500, ASTM A36, S355JRH, SS400.

Customizable Length: Standard 6 meters, fixed lengths from 1 to 12 meters accepted.

Special Specifications: Special specs are available upon request for unique requirements.

High Tolerance Precision: Thickness and OD tolerance controlled within +/- 0.2mm.

Versatile Surface Treatment: Options include Anti-rust Oiled, Black Anneal, and Hot Rolled.

Fast Delivery Time: Delivery within 15-20 days after receiving the deposit.

Global Export Experience: Exported to Australia, India, Russia, Canada, and Middle East since 2008.

Company profile

Qingdao Wanrunda Imp and Exp Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2008-09-18Nearest Port: Qingdao Port, Tianjin port, Shanghai PortAverage Response Time: ≤15hTerms of Payment: LC, T/T, Western Union, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF

AI-Powered supplier vetting

SummaryQingdao Wanrunda Imp and Exp Co., Ltd. is identified as both a trading company and manufacturer/factory based in Shandong, China. It reports five production lines and listed annual capacities totaling 1,600 tons across steel products, including steel fences, trellises, plates, coils, pipes, and sections. The supplier states that 90% of sales are exports, has held exporting activity since 2008, and possesses self-operated import and export rights. ISO 9000 and ISO 9001 management-system certifications are reported. Its capabilities include punching, bending, welding, galvanizing, electrostatic spraying, powder coating, painting, and oiling, with manufacturing to ASTM, JIS, DIN, and API standards. Evidence is insufficient to assess after-sales service execution, financial credibility, innovation strength, and customer cases.

Supplier typeThe supplier is explicitly classified as both a trading company and manufacturer/factory. It is a China-based limited company in Shandong and reports self-operated import and export rights, with exporting activity beginning in 2008.

CertificationsThe supplier reports holding ISO 9000 and ISO 9001 supplier management-system certifications. These stated certifications provide explicit evidence of formal quality-management credentials.

Production capacityThe supplier reports five production lines and stated annual capacities of 200 tons for steel fence and guardrail, 300 tons for angle-steel and grape trellis, 100 tons for self-nail steel plates and hanger straps, and 500 tons each for steel angles/flat/coil/plate/stainless steel and steel pipe/hollow section/alloy steel. These figures explicitly demonstrate multi-product manufacturing capacity.

Customization capabilityThe supplier states that it has its own processing equipment and can perform punching, bending, welding, galvanizing, electrostatic spraying, powder coating, painting, and oiling. It also states that products can be manufactured according to ASTM, JIS, DIN, and API standards, supporting customized processing and specification compliance.